patch 9.0.0178: cursor position wrong with virtual text before Tab Commit: https://github.com/vim/vim/commit/e428fa04a758cc87ea580c856a796e58e407504b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 9 16:55:41 2022 +0100 patch 9.0.0178: cursor position wrong with virtual text before Tab Problem: Cursor position wrong with virtual text before Tab. Solution: Use the byte length, not the cell with, to compare the column. Correct tab size after text prop. (closes #10866)

|a+0&#ffffff0|n|y|t|h|i|n|g| @66
> @74
|t|r|y| @71
|X+3&&|q|u|i|c|k|f|i|x|F|a|i|l|s| |[|+|]| @38|2|,|0|-|1| @9|T|o|p
| +0&&@74
|t|r|y| @71
@2|a|n|y|t|h|i|n|g| @64
|X+1&&|q|u|i|c|k|f|i|x|F|a|i|l|s| |[|+|]| @38|2|,|0|-|1| @9|5|0|%
| +0&&@74
|~+0#4040ff13&| @73
|~| @73
|[+1#0000000&|N|o| |N|a|m|e|]| @47|0|,|0|-|1| @9|A|l@1
| +0&&@74